Fact about audio cassette
Compact cassette
Probably only hipsters use them nowadays, but cassettes were formerly a popular way of copying audio. However, it wasn’t just audio. Beginning from the early 1970s, people would use audiocassettes for data storage because they were cheaper than floppy disks at those times.
Most home computers came with a built-in cassette drive. Of course that much popularity caught some attention. In some countries, including the United Kingdom, Poland, Hungary, and the Netherlands, some radio stations began to broadcast computer programs so that the listeners could record and load into the computer!
However, as by 1981 floppy drives became more common among new products, cassette tapes lost their popularity but reigned supreme in music industry until the late 1990s.
Facts about electricity
One lightning bolt has enough electricity to service 200 000 homes.
First Light house to use electricity – Statue of Liberty (1886)
In 1800 Count Alassandro Volta made the “voltaic pile”, a battery.His experiments, along with Luigi Galvani, applying electricity to
frog’s
legs and making them jump when touched by an electric wire promptedMary Wollstonecraft Shelley to write FRANKENSTEIN in 1818.
In 1957 a battery was discovered in Bagdad. It was made by the Parthians,who ruled Bagdad from 250 B.C.E. to 224 C.E., and was used toelectroplate silver.
The Brooklyn Bridge was the first bridge to be lit using electricity.
Every year, American homes waste more than $13 billion in energy – anaverage of $150 per family.
More than 10,000 homes in the United States are powered entirely by solarenergy.
The electric chair was invented by a dentist.
Thomas Alva Edison (1847-1931) was one of the most well knowninventors of all time with 1093 patents
During the whole of his life, Edison received only three months of formalschooling, and was dismissed from school as being retarded.
The Livermore Centennial Light was manufactured in 1901 by the ShelbyElectric Company. It is a hand-blown bulb with a carbon filament. It usesapproximately 4 watts of electricity. The bulb has been left burningcontinuously in the firehouse as a night light over the fire trucks since 1901.
Electrocution is one of the top five causes of workplace deaths.
The first use of water to generate electricity was in 1882 on the Fox river, inthe USA, which produced enough power to light two paper mills and ahouse.
10 percent of total US generating capacity is fueled by natural gas, about thesame as hydropower. More than half of US capacity is coal-fired, withnuclear accounting for 20 percent.
$212 billion in electrical bills paid by US customers each year.
An electric oven uses one kilowatt-hour of electricity in about 20 minutes,but one kilowatt-hour will power a TV for 3 hours, run a 100-watt bulb for12 hours, and keep an electric clock ticking for 3 months.
An Electric eel can produce an electric shock of up to 650 volts at oneampere.
Currents of approximately 0.2 A are potentially fatal, because they can makethe heart fibrillate, or beat in an uncontrolled manner
